Rotary cutter-head.



J. J. W. ALEXANDER.

ROTARY GUTTER HEAD. A APPLIOATION HLBD Lamas, 19'09.

Patented Oct. 4, 1910.

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J. J. W. ALEXANDER.

ROTARY GUTTER HEAD. n APPLIUA'VIION FILED JAN. 22, 1909- Y 71,812Patented 001;.4, 1910.

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JJ fiala www JESSE J. W. ALEXANDER, OF RAYMOND, VASHINGTON.

ROTARY CUTTER-HEAD- Application led January 22, 1909.

To all whom it may concern:

Be it known that I, JESSE J. W. ALEX- ANDER, a citizen of the UnitedStates, residing at Raymond, in the county of Paciic and State ofVashington, have invented certain new and useful Improvements in RotaryCutter-Heads, of which the following is a specilication.

This invention relates to planing tools, and more particularly to rotarycutter heads, and has for its object to provide such a device which isadaptable to use with various kinds of planing work, such as tongue andgroove making, molding, and similar work.

A particular object of this invention is to provide a plurality ofcutting edges of various shapes adapted for detachable engagement withthe base portion of the invention.

Another object is to provide a means for adjusting opposite cutters tovary the width of a groove or other form to be cut.

Another object is to provide a novel and effective means for varying thedepth of operation of the cutters.

Another object is to provide a central hub portion adapted 'forengagement with a spindle, or similar revoluble member, and having meansfor adjusting the position of the base member relatively longitudinallyof the spindle.

Other objects and advantages will be apparent from the followingdescription, and it will be understood that changes in the specificstructure shown and described may be made within the scope of theclaims, and that any suitable materials may be used without depart-ingfrom the spirit of the invention.

In the drawings forming a portion of this specification, and in whichlike numerals ot' reference indicate similar parts in the several views,Figure 1 is a side view of the device, Fig. 2 is a longitudinalsectional view of the device, Fig. 3 is a top view of the cutter of Fig.2, Fig. t is a cross section on the line 1E- 4 of Fig. 1, Fig. 5 is adetail view of one of the cutter members adapted t'or forming tongues,Fig. 6 is a similar view of one of the cutter members adapted to formgrooves, Fig. 7 is a reduced bottom View of the device with the cuttersremoved.

Referring to the drawings, there is shown a hub or sleeve 10 having acircular laterally extending collar 11 recessed on its innerSpecification of Letters Patent.

Patented Oct. 4, 1910.

serial No. 473,609.

face as shown at 12 to receive a revoluble collar 13 engaged slidablyover the hub and provided with a boss 14 adapted to engage within therecess 12. The collar 13 is provided with a sleeve portion 14 externallythreaded and adapted for sliding engagement over the hub 10. The outerend 15 of the hub 10 is reduced, to form a shoulder 16, as shown, thereduced section being threaded adjacent to the shoulder.

The outer end of the hub 10 is interiorly threaded and there is engagedtherein a bolt having a lock nut 19 engaged thereover, being adapted toimpinge against a spindle within the hub for longitudinal adjustment ofthe hub thereon. A collar or nut 2O is engaged with the threaded portionof the beam 14C having a reduced opening at its outer side engagedrevolubly over the portion 15 and the hub 10 and against the shoulder 16for adjustment to vary the position of the member 13 longitudinally ofthe hub. A lock nut 21 is engaged with the threaded portion of the huboutwardly of the portion 16 for impingement against the nut 2O to secureit adjustably against movement. r1`he outer face ot' the collar 11 andthe inner face of the collar 13 are provided with a plurality of arcuateeccentric grooves 25, and adjacent threaded recesses 26, for a purposeto be subsequently indicated.

Secured adjustably upon the outer faces of the collars 11 and 13, thereare cutter members 27, each comprising a segmental plate having anarcuate opening 31 therein, and provided at its inner edge with alateral arcuate flange A adapt-ed for close engagement in the groove 25and having its opposite portion suitably shaped in cross section toproduce the effect desired in planing. One end of the member 27 isbeveled tangentially as shown, to produce a cutting edge 28. Bolts 30are engaged through the slots 31 formed in the cutter members, beingengaged in the recesses 26 to hold the cutter members adjustably on therespective members 13 and 11.

It will be seen that by the sliding adjustment of the members Q7 inengagement with the slots 25 the distance of the cutting edge 28 fromthe axis of the hub may be varied as desired. It will be noted also thatthe position of the slots 25 presents the cutting edges of the members27 outwardly of the rear end of the preceding member 27.

The member 13 is provided with a series ot' threaded openings 85therethrough. A set screw 36 is engaged through one of said openings toimpinge against the hub l0 to hold the member 13 against rotation uponthe hub. A longitudinally extending slot 37 is formed in the hub l0beneath the opposite opening 35, the set screw 38 being engaged throughthe adjacent opening 35 to impinge against a spindle within the hub whenin operative position.

It will be seen that a cutter is provided adapted to carry detachablecutter portions having' cutting' surfaces ot various shapes adapted forvarious uses.

It will be seen that the point of engagement of the cutter members witha strip of lumber may be varied laterally by means of the set screw 18at the outer end ot' the hub. The width of the tongues or grooves orother forms cut may be varied by actuation ot the nut 20 in engagement.with the sleeve H. The depth of operation of the cntter members 27 maybe adjusted as indicated by means of the bolts 30.

1What is claimed is:

l. A rotary cutter member comprising a hub portion adapted fordetachable engagement with a spindle, means for adjusting the hublongitudinally of the spindle, said hub carrying an annular ilangehaving a plurality of eccentric grooves in its outer side, a collarsimilar to the flange slidably engaged with the hub adjacent to thecollar and having eccentric grooves thereon on the inner side oppositelyof and extending in a common direction with the iirst mentioned grooves,oppositely disposed cutter members carried by the flange and collar,said members having longitudinally extending ribs slidably engaged' insaid grooves, means for securing the cutter members adjustably in thegrooves, said slidable collar having a sleeve portion extendinglongitudinally of the hub, a threaded passage through the sleeve, alongitudinally extending slot being formed in the hub in registry withthe passage, a bolt engaged through the passage and slot to engage aspindle within the hub and to hold the hub and sleeve against relativerotation, said sleeve being exteriorly threaded, said hub being' reducedin diameter outwardly ot the sleeve, and a nut threaded on the sleeveand having a restricted portion engaged with the shoulder for adjustmentof the second named collar longitudinally of the hub.

2. A rotary cutter head comprising a hollow hub portion adapted fordetachable engagement with a spindle, said hub carrying a lange having'a plurality of eccentric grooves in its outer side, a revoluble collarslidably engaged upon the hub adjacent the flange and being of a similarsize, said collar having eccentric grooves therein on its inner sideoppositely of and extending in a common direction with the firstmentioned grooves, means for securing the collar upon the hub adjustablyagainst longitudinal movement thereon, said collar and flange havingthreaded recesses therein adjacent the grooves, oppositely disposedarcuate cutter members carried by the flange and collar, said cutterscomprising a. central web portion adapted to be disposed flatly againstthe flange or collar, an inwardly extending rib formed thereon andadapted to engage snugly in the eccentric grooves, said web portionsprojecting beyond the periphery of the flange and collar and carryinginwardly extending engaging portions extending laterally from the planeof the web portions, said web portion having a longitudinally extending'slot therein, and headed bolts engaged in the threaded recesses torclamping engagement against the cutter members.

In testimony whereof I aiiix my signature, j in presence ot twowitnesses.

JESSE J. lV. ALEXANDER.

lVitnesses B. I. JONES, FRANK GOGGIN.

